#2F40A5#2F40A5

#2F40A5 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.3% C 0.163 H 270.5°. Best body text is #FFFFFF at 8.76:1 contrast (WCAG AA passes).

Color values

HEX	#2F40A5
RGB	rgb(47, 64, 165)
HSL	hsl(231, 56%, 42%)
HSV	hsv(231, 72%, 65%)
CMYK	cmyk(71.5%, 61.2%, 0%, 35.3%)
CIE-LAB	lab(31.78, 28.48, -56.46)
CIE-LCH	lch(31.78, 63.24, 296.77°)
OKLab	oklab(42.3% 0.0013 -0.1629)
OKLCH	oklch(42.3% 0.163 270.5)
XYZ	xyz(9.7949, 6.9868, 36.4224)
Luminance	0.0699 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F40A5 #A5942F

analogous

#2F7BA5 #2F40A5 #592FA5

triadic

#2F40A5 #A52F40 #40A52F

tetradic

#2F40A5 #A52F7B #A5942F #2FA559

square

#2F40A5 #A52F7B #A5942F #2FA559

split-complementary

#2F40A5 #A5592F #7BA52F

monochromatic

#141B46 #212E75 #2F40A5 #475ACB #7684D8

Accessibility & contrast

On white

8.76

#2F40A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#2F40A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F40A5

8.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F40A5	#FFFFFF	#000000	##FFFFFF
##2F40A5	1.00	8.76	2.40	8.76
#FFFFFF	8.76	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A8

Deuteranopia (green-blind)

#0045A3

Tritanopia (blue-blind)

#00596C

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2f40a5;
/* rgb */ color: rgb(47, 64, 165);
/* oklch */ color: oklch(42.3% 0.163 270.5);

Tailwind

colors: {
  custom: {
    50: '#7874c1',
    500: '#2f40a5',
    950: '#000000',
  },
}

SCSS

$custom: #2f40a5;
$custom-light: #7874c1;
$custom-dark: #000000;

JSON

{
  "hex": "#2f40a5",
  "rgb": {
    "r": 47,
    "g": 64,
    "b": 165
  },
  "hsl": {
    "h": 231.356,
    "s": 55.66,
    "l": 41.569
  },
  "oklch": {
    "l": 0.423,
    "c": 0.16293,
    "h": 270.5
  },
  "luminance": 0.06988
}

Semantic roles & 50–950 ramp

primary

#2F40A5

secondary

#C0B470

accent

#C949DF

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2F40A5

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →